HEIC to JXL Converter

Convert HEIC images from your iPhone to JPEG XL (JXL) format for superior compression and quality. JXL is a next-generation format that offers up to 60% smaller files than JPEG while preserving details. Perfect for web optimization and archiving your iPhone photos.

Drop your HEIC files here

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HEIC HEIF Batch Upload
Max 25MB per file • Up to 10 files
Related HEIC Tools:
HEIC to JPG HEIC to PNG HEIC to WebP HEIC to ICO HEIC Analyzer HEIC Viewer JXL to JPG

How to Convert HEIC to JXL

  1. Upload your HEIC images by dragging and dropping or clicking the upload area. You can select up to 10 files at once from your iPhone or Mac.
  2. Choose compression mode: Select lossy for smaller files (great for web) or lossless for archiving with perfect quality preservation.
  3. Adjust settings: Set quality level (for lossy mode), encoding effort, and optionally enable resizing with our resize tool.
  4. Convert and download: Click convert and download individual JXL files or all as a ZIP archive.
Pro tip: Use our HEIC Analyzer to check your image properties before converting. For universal compatibility, also try HEIC to JPG.

HEIC vs JXL Comparison

HEIC

Apple's High Efficiency Image Format used by iPhones and iPads. Excellent compression but limited compatibility outside Apple ecosystem. Use our HEIC to PNG converter for transparency needs.

JXL

JPEG XL is the next-generation image format designed to replace JPEG. It offers 60% better compression, lossless transcoding from JPEG, HDR support, and progressive decoding. Growing browser support in Safari with experimental flags in Chrome and Firefox.

Lossy vs Lossless Mode

Lossy

Best for photos and web use. Achieves 50-70% smaller files than JPEG by using perceptual optimization. JXL's lossy mode preserves fine details better than JPEG at equivalent file sizes. Great for sharing compressed images online.

Lossless

Best for archiving and editing. Preserves every pixel perfectly with no quality loss. JXL lossless is typically 20-35% smaller than PNG compression. Ideal for photo archives and source images.

Quality & Effort Settings Guide

Quality 85-100%

Visually lossless quality. Excellent for photography, portfolio sites, and high-quality prints. Minimal compression artifacts.

Quality 70-84%

Great balance for web images. Significant file savings with minimal visible quality loss. Recommended for most use cases.

Quality 50-69%

Aggressive compression for thumbnails and previews. Noticeable quality reduction but dramatically smaller files.

Encoding Effort

Fast (3)

Quick encoding, slightly larger files. Use for batch processing many images.

Balanced (7)

Good compression with reasonable speed. Recommended for most users.

Best (9)

Maximum compression, slower encoding. Use when file size is critical.

Frequently Asked Questions

JPEG XL is a next-generation image format developed by the Joint Photographic Experts Group. It combines the best features of modern codecs: up to 60% better compression than JPEG, support for both lossy and lossless modes, HDR and wide color gamut, animation support, and progressive decoding. It can also losslessly transcode existing JPEG files. Learn more about image formats with our JPG Analyzer.

JXL offers significantly better compression than JPG while maintaining higher quality. If you're archiving photos or targeting modern browsers, JXL preserves more detail at smaller file sizes. However, for maximum compatibility today, HEIC to JPG is still recommended. You can also try HEIC to WebP for better compression with wider browser support.

Safari fully supports JXL since version 17. Chrome and Firefox have experimental support that can be enabled via flags. For universal browser support today, consider using WebP format which works in all modern browsers. JXL adoption is growing as more browsers add native support.

Quality controls the visual fidelity and file size - lower quality means smaller files with more compression artifacts. Effort controls how hard the encoder works to find the optimal compression - higher effort produces smaller files but takes longer to encode. For best results, use higher effort when you have time and file size matters.

Yes, each HEIC file can be up to 25MB, and you can upload up to 10 files at once. This accommodates high-resolution iPhone photos including ProRAW images. For very large files, consider using our Image Resizer first to reduce dimensions.

Files are temporarily stored only during conversion and automatically deleted within 24 hours. We don't keep copies of your images and don't use them for any other purpose. Your privacy is important to us.

Yes! Use our JXL to JPG converter for maximum compatibility, or JXL to PNG when you need transparency support. We also offer converters for other JXL conversions.